1准备
1.1在百度智能云中创建自己的应用,得到API Key和Secret Key
1.2maven导入SDK依赖
2源码
import java.net.URLEncoder; /** * 植物识别 */ public class Plant { /** * 重要提示代码中所需工具类 * FileUtil,Base64Util,HttpUtil,GsonUtils请从 * https://ai.baidu.com/file/658A35ABAB2D404FBF903F64D47C1F72 * https://ai.baidu.com/file/C8D81F3301E24D2892968F09AE1AD6E2 * https://ai.baidu.com/file/544D677F5D4E4F17B4122FBD60DB82B3 * https://ai.baidu.com/file/470B3ACCA3FE43788B5A963BF0B625F3 * 下载 */ public static String plant(String filepath) { // 请求url String url = "https://aip.baidubce.com/rest/2.0/image-classify/v1/plant"; try { // 本地文件路径 String filePath = filepath; byte[] imgData = FileUtil.readFileByBytes(filePath); String imgStr = Base64Util.encode(imgData); String imgParam = URLEncoder.encode(imgStr, "UTF-8"); String param = "image=" + imgParam; // 注意这里仅为了简化编码每一次请求都去获取access_token,线上环境access_token有过期时间, 客户端可自行缓存,过期后重新获取。 String accessToken = "24.7f4883fe5860ec0d24daf440ad4635c9.2592000.1669687769.282335-28090979"; String result = HttpUtil.post(url, accessToken, param); System.out.println(result); return result; } catch (Exception e) { e.printStackTrace(); } return null; } public static void main(String[] args) { // Plant.plant(); } }
import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.util.List; import java.util.Map; /** * http 工具类 */ public class HttpUtil { public static String post(String requestUrl, String accessToken, String params) throws Exception { String contentType = "application/x-www-form-urlencoded"; return HttpUtil.post(requestUrl, accessToken, contentType, params); } public static String post(String requestUrl, String accessToken, String contentType, String params) throws Exception { String encoding = "UTF-8"; if (requestUrl.contains("nlp")) { encoding = "GBK"; } return HttpUtil.post(requestUrl, accessToken, contentType, params, encoding); } public static String post(String requestUrl, String accessToken, String contentType, String params, String encoding) throws Exception { String url = requestUrl + "?access_token=" + accessToken; return HttpUtil.postGeneralUrl(url, contentType, params, encoding); } public static String postGeneralUrl(String generalUrl, String contentType, String params, String encoding) throws Exception { URL url = new URL(generalUrl); // 打开和URL之间的连接 HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("POST"); // 设置通用的请求属性 connection.setRequestProperty("Content-Type", contentType); connection.setRequestProperty("Connection", "Keep-Alive"); connection.setUseCaches(false); connection.setDoOutput(true); connection.setDoInput(true); // 得到请求的输出流对象 DataOutputStream out = new DataOutputStream(connection.getOutputStream()); out.write(params.getBytes(encoding)); out.flush(); out.close(); // 建立实际的连接 connection.connect(); // 获取所有响应头字段 Map<String, List<String>> headers = connection.getHeaderFields(); // 遍历所有的响应头字段 for (String key : headers.keySet()) { System.err.println(key + "--->" + headers.get(key)); } // 定义 BufferedReader输入流来读取URL的响应 BufferedReader in = null; in = new BufferedReader( new InputStreamReader(connection.getInputStream(), encoding)); String result = ""; String getLine; while ((getLine = in.readLine()) != null) { result += getLine; } in.close(); System.err.println("result:" + result); return result; } }
import java.io.*; /** * 文件读取工具类 */ public class FileUtil { /** * 读取文件内容,作为字符串返回 */ public static String readFileAsString(String filePath) throws IOException { File file = new File(filePath); if (!file.exists()) { throw new FileNotFoundException(filePath); } if (file.length() > 1024 * 1024 * 1024) { throw new IOException("File is too large"); } StringBuilder sb = new StringBuilder((int) (file.length())); // 创建字节输入流 FileInputStream fis = new FileInputStream(filePath); // 创建一个长度为10240的Buffer byte[] bbuf = new byte[10240]; // 用于保存实际读取的字节数 int hasRead = 0; while ( (hasRead = fis.read(bbuf)) > 0 ) { sb.append(new String(bbuf, 0, hasRead)); } fis.close(); return sb.toString(); } /** * 根据文件路径读取byte[] 数组 */ public static byte[] readFileByBytes(String filePath) throws IOException { File file = new File(filePath); if (!file.exists()) { throw new FileNotFoundException(filePath); } else { ByteArrayOutputStream bos = new ByteArrayOutputStream((int) file.length()); BufferedInputStream in = null; try { in = new BufferedInputStream(new FileInputStream(file)); short bufSize = 1024; byte[] buffer = new byte[bufSize]; int len1; while (-1 != (len1 = in.read(buffer, 0, bufSize))) { bos.write(buffer, 0, len1); } byte[] var7 = bos.toByteArray(); return var7; } finally { try { if (in != null) { in.close(); } } catch (IOException var14) { var14.printStackTrace(); } bos.close(); } } } }
/** * Base64 工具类 */ public class Base64Util { private static final char last2byte = (char) Integer.parseInt("00000011", 2); private static final char last4byte = (char) Integer.parseInt("00001111", 2); private static final char last6byte = (char) Integer.parseInt("00111111", 2); private static final char lead6byte = (char) Integer.parseInt("11111100", 2); private static final char lead4byte = (char) Integer.parseInt("11110000", 2); private static final char lead2byte = (char) Integer.parseInt("11000000", 2); private static final char[] encodeTable = new char[]{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'}; public Base64Util() { } public static String encode(byte[] from) { StringBuilder to = new StringBuilder((int) ((double) from.length * 1.34D) + 3); int num = 0; char currentByte = 0; int i; for (i = 0; i < from.length; ++i) { for (num %= 8; num < 8; num += 6) { switch (num) { case 0: currentByte = (char) (from[i] & lead6byte); currentByte = (char) (currentByte >>> 2); case 1: case 3: case 5: default: break; case 2: currentByte = (char) (from[i] & last6byte); break; case 4: currentByte = (char) (from[i] & last4byte); currentByte = (char) (currentByte << 2); if (i + 1 < from.length) { currentByte = (char) (currentByte | (from[i + 1] & lead2byte) >>> 6); } break; case 6: currentByte = (char) (from[i] & last2byte); currentByte = (char) (currentByte << 4); if (i + 1 < from.length) { currentByte = (char) (currentByte | (from[i + 1] & lead4byte) >>> 4); } } to.append(encodeTable[currentByte]); } } if (to.length() % 4 != 0) { for (i = 4 - to.length() % 4; i > 0; --i) { to.append("="); } } return to.toString(); } }
import org.json.JSONObject; import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.util.List; import java.util.Map; /** * 获取token类 */ public class AuthService { /** * 获取权限token * @return 返回示例: * { * "access_token": "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567", * "expires_in": 2592000 * } */ public static String getAuth() { // 官网获取的 API Key 更新为你注册的 String clientId = "cGeY3XuO1InooREZl1wpqMEW"; // 官网获取的 Secret Key 更新为你注册的 String clientSecret = "zdVL0DIZr0lDBR1o5fXB7pIiyWBhAMei"; return getAuth(clientId, clientSecret); } /** * 获取API访问token * 该token有一定的有效期,需要自行管理,当失效时需重新获取. * @param ak - 百度云官网获取的 API Key * @param sk - 百度云官网获取的 Securet Key * @return assess_token 示例: * "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567" */ public static String getAuth(String ak, String sk) { // 获取token地址 String authHost = "https://aip.baidubce.com/oauth/2.0/token?"; String getAccessTokenUrl = authHost // 1. grant_type为固定参数 + "grant_type=client_credentials" // 2. 官网获取的 API Key + "&client_id=" + ak // 3. 官网获取的 Secret Key + "&client_secret=" + sk; try { URL realUrl = new URL(getAccessTokenUrl); // 打开和URL之间的连接 HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection(); connection.setRequestMethod("GET"); connection.connect(); // 获取所有响应头字段 Map<String, List<String>> map = connection.getHeaderFields(); // 遍历所有的响应头字段 for (String key : map.keySet()) { System.err.println(key + "--->" + map.get(key)); } // 定义 BufferedReader输入流来读取URL的响应 BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream())); String result = ""; String line; while ((line = in.readLine()) != null) { result += line; } /** * 返回结果示例 */ System.err.println("result:" + result); JSONObject jsonObject = new JSONObject(result); String access_token = jsonObject.getString("access_token"); return access_token; } catch (Exception e) { System.err.printf("获取token失败!"); e.printStackTrace(System.err); } return null; } }
import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import json.JsonObjectHandleJson; import java.awt.BorderLayout; import java.awt.EventQueue; import java.awt.Image; import javax.swing.*; import javax.swing.border.EmptyBorder; import javax.swing.filechooser.FileNameExtensionFilter; import java.awt.event.ActionListener; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.HashSet; import java.awt.event.ActionEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.Font; import java.util.List; import java.util.Map; public class PlantFrm extends JFrame{ private JPanel contentPane; private static JLabel lblNewLabel; private static JLabel prcresult; private JButton btnNewButton ; private JButton btnSecButton ; private static String filepath; private static String result; private static List<String> name; /** * Launch the application. */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { PlantFrm frame = new PlantFrm(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame. */ public PlantFrm() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 622, 421); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); setContentPane(contentPane); contentPane.setLayout(null); lblNewLabel = new JLabel(""); lblNewLabel.setBounds(36, 39, 250, 250); contentPane.add(lblNewLabel); btnNewButton = new JButton("上传图片"); btnNewButton.setFont(new Font("宋体", Font.BOLD, 18)); btnNewButton.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { addPicture(btnNewButton); } }); btnNewButton.setBounds(100, 300, 150, 46); contentPane.add(btnNewButton); btnSecButton = new JButton("上传图片验证"); btnSecButton.setFont(new Font("宋体", Font.BOLD, 18)); btnSecButton.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { System.out.println(name); prcresult = new JLabel("这个植物是:"+String.valueOf(name)); prcresult.setBounds(340,60,200,200); prcresult.setFont(new Font("宋体",Font.BOLD, 14)); contentPane.add(prcresult); } }); btnSecButton.setBounds(355, 300, 150, 46); contentPane.add(btnSecButton); } //上传图片 public static void addPicture(JButton button) { JFileChooser chooser = new JFileChooser(); chooser.setMultiSelectionEnabled(true); /** 过滤文件类型 * */ FileNameExtensionFilter filter = new FileNameExtensionFilter("jpg","png"); chooser.setFileFilter(filter); int returnVal = chooser.showOpenDialog(button); if (returnVal == JFileChooser.APPROVE_OPTION) { /** 得到选择的文件* */ File[] arrfiles = chooser.getSelectedFiles(); if (arrfiles == null || arrfiles.length == 0) { return; } //判断是否有文件为jpg或者png File ff = chooser.getSelectedFile(); //创建一个fileName得到选择文件的名字 String fileName =ff.getName(); //lastIndexOf(".") 返回"."在文件名中最后一次出现的下标 //substring(int index)从指定的index开始截取后面的字符串 //比如: a.txt 最后一次出现的.下标是 1 substring(1)就是从下标1的位置开始截取 截取后的新字符串为 .txt //所以这里需要+1 才能只截取文件类型 txt String prefix=fileName.substring(fileName.lastIndexOf(".")+1); //判断选择的文件是否是图片文件 必须排除不是的情况 不然后续操作会报错 if(!(prefix.equals("jpg") || prefix.equals("png"))){ JOptionPane.showMessageDialog(new JDialog(),":请选择.jpg 或 .png格式的图片"); return; } FileInputStream input = null; FileOutputStream out = null; //要上传到的路径,这里可以设你要放图片的路径 String path = "D:\\Photo"; try { for (File f : arrfiles) { File dir = new File(path); /** 目标文件夹 * */ File[] fs = dir.listFiles(); HashSet<String> set = new HashSet<String>(); for (File file : fs) { set.add(file.getName()); } /** 判断是否已有该文件* */ if (set.contains(f.getName())) { JOptionPane.showMessageDialog(new JDialog(), f.getName() + ":该文件已存在!"); return; }else { filepath = path +"\\"+ f.getName(); } System.out.println(filepath); //通过文件选择器对象拿到选择的文件.拿到该文件的绝对路径 String absolutePath = chooser.getSelectedFile().getAbsolutePath(); //创建一个ImageIcon对象 传入图片文件的绝对路径 ImageIcon imageIcon = new ImageIcon(absolutePath); lblNewLabel.setIcon(imageIcon); lblNewLabel.getIcon(); input = new FileInputStream(f); byte[] buffer = new byte[1024]; File des = new File(path, f.getName()); out = new FileOutputStream(des); int len = 0; while (-1 != (len = input.read(buffer))) { out.write(buffer, 0, len); } out.close(); input.close(); } JOptionPane.showMessageDialog(null, "上传成功!", "提示", JOptionPane.INFORMATION_MESSAGE); } catch (FileNotFoundException e1) { JOptionPane.showMessageDialog(null, "上传失败!", "提示", JOptionPane.ERROR_MESSAGE); e1.printStackTrace(); } catch (IOException e1) { JOptionPane.showMessageDialog(null, "上传失败!", "提示", JOptionPane.ERROR_MESSAGE); e1.printStackTrace(); } result = Plant.plant(filepath); name = JsonObjectHandleJson.getanimalmsg(result); System.out.println("------------name:"+name); } } }
3结果
标签:图像识别,String,java,AWT,Swing,static,import,new,public From: https://www.cnblogs.com/yx111/p/16842200.html